16722365600 has 72 divisors (see below), whose sum is σ = 41074246080. Its totient is φ = 6647857920.

The previous prime is 16722365581. The next prime is 16722365609. The reversal of 16722365600 is 656322761.

It is a super-2 number, since 2×16722365600² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16722365609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66281 + ... + 194519.

It is an arithmetic number, because the mean of its divisors is an integer number (570475640).

Almost surely, 2^16722365600 is an apocalyptic number.

16722365600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16722365600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20537123040).

16722365600 is an abundant number, since it is smaller than the sum of its proper divisors (24351880480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16722365600 is a wasteful number, since it uses less digits than its factorization.

16722365600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128422 (or 128409 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The spelling of 16722365600 in words is "sixteen billion, seven hundred twenty-two million, three hundred sixty-five thousand, six hundred".